-al -ol a-a a-c a-t aaa aac aaf aal aao aat ac- aca acc acf acl aco act af- afa afc aff afl afo aft al- ala alc alf all alo alt aoa aoc aof aol aoo aot at- ata atc atf atl ato att c-- caa cac caf cal cao cat cca ccc ccf ccl cco cct cfa cfc cff cfl cfo cft cl- cla clc clf cll clo clt co- coa coc cof col coo cot cta ctc ctf ctl cto ctt faa fac faf fal fao fat fca fcc fcf fcl fco fct ffa ffc fff ffl ffo fft fla flc flf fll flo flt foa foc fof fol foo fot fta ftc ftf ftl fto ftt la- laa lac laf lal lao lat lca lcc lcf lcl lco lct lfa lfc lff lfl lfo lft lla llc llf lll llo llt loa loc lof lol loo lot lta ltc ltf ltl lto ltt oaa oac oaf oal oao oat oc- oca occ ocf ocl oco oct of- ofa ofc off ofl ofo oft ola olc olf oll olo olt oo- ooa ooc oof ool ooo oot ot- ota otc otf otl oto ott taa tac taf tal tao tat tca tcc tcf tcl tco tct tfa tfc tff tfl tfo tft tla tlc tlf tll tlo tlt to- toa toc tof tol too tot tta ttc ttf ttl tto ttt